BERLIN — Employees at General Motor Co.'s Opel troubled German plant in Bochum have rejected a redevelopment plan, which means production there could end by late 2014.

German news agency dpa said Thursday that a majority of the Bochum plant's workers rejected a redevelopment plan that would have left only 1,200 jobs there after the year 2016. About 3,200 persons now work at the unit in Bochum.

Steve Girsky, the chairman of Opel's board of directors and GM's vice chairman, had said earlier that production at the Bochum plant would end by Jan. 1, 2015, if there was not an agreement with the employees, dpa reported.